3 files changed, 23 insertions, 1 deletions

diff --git a/src/drivers/intel/fsp2_0/Kconfig b/src/drivers/intel/fsp2_0/Kconfig
index 541ec47b46..1e84dabbbe 100644
--- a/src/drivers/intel/fsp2_0/Kconfig
+++ b/src/drivers/intel/fsp2_0/Kconfig
@@ -154,8 +154,12 @@ config FSP_USES_CB_STACK
 
 config FSP_TEMP_RAM_SIZE
 	hex
-	default 0x10000
 	depends on FSP_USES_CB_STACK
+	help
+	  The amount of anticipated heap usage in CAR by FSP to setup HOB.
+	  This configuration is applicable for FSP specification using shared
+	  stack with coreboot/bootloader.
+	  Sync this value with Platform FSP integration guide recommendation.
 
 config VERIFY_HOBS
 	bool "Verify the FSP hand-off-blocks"
diff --git a/src/soc/intel/cannonlake/Kconfig b/src/soc/intel/cannonlake/Kconfig
index d949fffc79..fc3f2ac3c2 100644
--- a/src/soc/intel/cannonlake/Kconfig
+++ b/src/soc/intel/cannonlake/Kconfig
@@ -125,6 +125,15 @@ config DCACHE_BSP_STACK_SIZE
 	  The amount of anticipated stack usage in CAR by bootblock and
 	  other stages.
 
+config FSP_TEMP_RAM_SIZE
+	hex
+	depends on FSP_USES_CB_STACK
+	default 0x10000
+	help
+	  The amount of anticipated heap usage in CAR by FSP.
+	  Refer to Platform FSP integration guide document to know
+	  the exact FSP requirement for Heap setup.
+
 config IFD_CHIPSET
 	string
 	default "cnl"
diff --git a/src/soc/intel/icelake/Kconfig b/src/soc/intel/icelake/Kconfig
index 1bd478c70e..05fe423fac 100644
--- a/src/soc/intel/icelake/Kconfig
+++ b/src/soc/intel/icelake/Kconfig
@@ -76,6 +76,15 @@ config DCACHE_BSP_STACK_SIZE
 	  The amount of anticipated stack usage in CAR by bootblock and
 	  other stages.
 
+config FSP_TEMP_RAM_SIZE
+	hex
+	depends on FSP_USES_CB_STACK
+	default 0x10000
+	help
+	  The amount of anticipated heap usage in CAR by FSP.
+	  Refer to Platform FSP integration guide document to know
+	  the exact FSP requirement for Heap setup.
+
 config IFD_CHIPSET
 	string
 	default "icl"